package com.sky.controller.user;

import com.sky.constant.StatusConstant;
import com.sky.entity.Dish;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController("userDishController")
@RequestMapping("/user/dish")
@Api(tags = "分类id查询商品")
@Slf4j
public class DishController {
    @Autowired
    private DishService dishService;
    @Autowired
    private RedisTemplate<String,Object> redisTemplate;

    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<DishVO>> list(Long categoryId) {
        log.info("分类id查询菜品：{}", categoryId);
        // 查询redis缓存是否存在菜品信息
        String key = "dish_" + categoryId;
        // 判断缓存是否有数据
        List<DishVO> dishVOs = (List<DishVO>) redisTemplate.opsForValue().get(key);
        if (dishVOs != null && dishVOs.size() > 0) {
            // 存在数据直接返回
            log.info("redis缓存已查询到数据，直接返回....");
            return Result.success(dishVOs);
        }
        // 不存在则查询数据库，再存储到redis
        Dish dish = new Dish();
        dish.setCategoryId(categoryId);
        dish.setStatus(StatusConstant.ENABLE);//查询起售中的菜品
        log.info("redis缓存未查询到数据，查询数据库并加入缓存....");
        dishVOs = dishService.query(dish);
        // 存入redis缓存
        redisTemplate.opsForValue().set(key, dishVOs);
        return Result.success(dishVOs);
    }
}
